FEEDBACK CONTROL CIRCUIT OF PULSE-FREQUENCY MODULATION CONVERTER THAT ADAPTIVELY ADJUSTS ON-TIME CONTROL SIGNAL AND ASSOCIATED FEEDBACK CONTROL METHOD
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United States of America Patent
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Issued Date -
Sep 19, 2024
app pub date -
Dec 28, 2023
filing date -
Mar 13, 2023
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Abstract
A feedback control circuit of a pulse-frequency modulation (PFM) converter includes an on-time timer circuit and a detection circuit. The on-time timer circuit generates an on-time control signal for controlling an on-time duration of a switch circuit included in a power stage circuit of the PFM converter. The detection circuit controls the on-time timer circuit to adaptively adjust the on-time control signal according to a pulse interval between two successive inductor current pulses of the PEM converter.
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